Donauwörth (dpa / lby) – A father threatened the school management of a primary school in the district of Donau-Ries on Friday afternoon. His son had previously been expelled from the elementary school in Donauwörth for aggressive behavior. The 45-year-old then went to the school management and “mistaken the tone noticeably,” the police said. The school management then locked themselves in the school building and called the police. A preliminary investigation into threats and insults is now under way against the father of the school child.